Patents by Inventor Michael G Duckworth

Michael G Duckworth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing low sulfur dispersant polymers
    Patent number: 9957342
    Abstract: The present invention relates to a process for preparing grafted polyalkyl(meth)acrylates (PAMAs) containing dispersant repeating units in the polymer backbone as well as in the grafted layer, which polymers are characterized by a low sulfur content, the products available by this process and their use as an additive to fuels, especially to middle distillates and blends thereof. The present invention further relates to a composition comprising the grafted polyalkyl(meth)acrylates prepared by the process according to the present invention and the use of said composition as an additive component to fuels, especially to middle distillates and blends thereof, and for improving the cold flow properties of fuel oil and fuel oil compositions, especially to middle distillate fuels and blends thereof.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: May 1, 2018
    Assignee: Evonik Oil Additives GmbH
    Inventors: Justin August Langston, Barbara Voltz, Frank-Olaf Maehling, Michael G Duckworth, Brian Hess, Rhishikesh Gokhale
  • PROCESS FOR PREPARING LOW SULFUR DISPERSANT POLYMERS
    Publication number: 20150274875
    Abstract: The present invention relates to a process for preparing grafted polyalkyl(meth)acrylates (PAMAs) containing dispersant repeating units in the polymer backbone as well as in the grafted layer, which polymers are characterized by a low sulfur content, the products available by this process and their use as an additive to fuels, especially to middle distillates and blends thereof. The present invention further relates to a composition comprising the grafted polyalkyl(meth)acrylates prepared by the process according to the present invention and the use of said composition as an additive component to fuels, especially to middle distillates and blends thereof, and for improving the cold flow properties of fuel oil and fuel oil compositions, especially to middle distillate fuels and blends thereof.
    Type: Application
    Filed: October 8, 2013
    Publication date: October 1, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Justin August Langston, Barbara Voltz, Frank-Olaf Maehling, Michael G Duckworth, Brian Hess, Rhishikesh Gokhale